/* ===== 基础样式 ===== */
:root {
  --primary-color: #2c3e50;
  --secondary-color: #1a1a2e;
  --accent-color: #4fc3f7;
  --text-color: #ffffff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Arial, sans-serif;
}

body {
  background-color: #f5f7fa;
  color: #333;
}

@media (max-width: 480px) {
  .main-content {
    padding: 60px 8px 8px;
  }
}
